Too many requests! You have made too many requests!! No more requests!!!
– How many times do you have to hear that before you get really angry?Amazon Chime API’s request throttling tested our patience like this. But all we ever wanted was to make a simple text chat app work! In this article, you’ll find out why Chime was so unkind to us, what we did to turn things around, and how you too can follow the path we forged.

Single-page applications (SPAs) have earned a strong position in demand long ago. Such apps have one page where most information remains unchanged, and only its parts are updated when a user interacts with them. 

Maybe, you don’t know precisely what they are. However, you probably use them daily. Most social media, Gmail, and other programs are single-page apps. They are quickly adopted thanks to their fast load times and user-friendliness. 

As for React, it is quite a favored instrument for SPA web development. Programmers can build SPA’s components with React to ensure their scalability, reuse them with few configurations, and refresh them instantly without manually reloading a page. Besides, React solutions are optimized for SEO while delivering high flexibility thanks to the Virtual DOM. 

What Are React Single Page Applications (SPAs)? 

SPAs consist of one HTML page. To access it, you make a one-time connection and then – load and modify data without refreshing an entire page. Only the blocks engaged in the interaction process are updated while other page elements remain unaffected.

A clear illustration of a one-page application is Google Docs. While reading a text, you scroll through sheets, but the top row with the menu and the left panel with captions stay put. Whatever changes you make, certain things stay untouched.

React is very common for SPAs because of its convenience — it speeds up the programming process significantly. Also, note that it is not a framework, it’s a library. The main thing in it is the components as they represent particular items on a page. Each one of them contains the entire set of data and methods needed for work.

React allows you to save the state of the elements. This makes them isolated and self-contained. This feature, in turn, provides developers with the ability to reuse the elements as needed. Specifically, the same element can be applied to another page or parts of the website as many times as you want. This way, a developer doesn't need to re-write a significant part of the code. Therefore, the absence of complex dependencies between elements simplifies troubleshooting.

Pros of React SPAs

Why do giant companies like Meta choose React SPAs? It becomes clear after looking at its main advantages: 

  • Versatility. SPAs can be used from any device that has access to the Internet. 
  • Accessibility. There are no problems with сompatibility, as well as memory limitations, capacity, or installation time.
  • Enhanced usability. These apps are straightforward and enjoyable to operate.
  • Better responsiveness. It can be ensured thanks to the high speed of data load.
  • Ability to process large volumes of data. The device's memory does not limit the processing power of an app and the volumes of data it operates.
  • Code reuse. React allows developers to reuse parts of code as often as needed in the same app. 

Let's look closely at the main merits of React SPA development. 

Enhanced User Experience (UX)

The primary advantage of a single web page application is immediate data update, resulting in a smooth sensation from using and improved responsiveness. Since SPA doesn't have to implement full-page reloads during use, the contents of a page refresh very quickly. The program only needs to connect to the server at the start, and then simply loads the necessary segments as a visitor needs them. In a single-page app, everything works quickly after the first load and doesn’t keep users waiting. 

Improved Developer Efficiency

Programmers who use React receive a lot of tools that simplify the assembling of the single-page application architecture. Moreover, React allows reusing code in software architecture to speed up the work. For instance, if you decide later to evolve a one-page app into a full-featured multi-page application, you’ll be able to reuse about 30% of the code instead of writing everything from scratch. Plus, it will help your startup save time and reduce costs.

Rich Interactivity

React is a freely accessible framework library that has a JSX (JavaScript XML) compiler with a focus on the users’ comfort as it provides prompt rendering. Thus, by utilizing React, you can create a UI-centric product which is common to SPAs that should have fluid interfaces, rapidly responding to the actions of users.

Cons of React SPAs

Surely, React SPA development has its drawbacks. Otherwise, every app would be written using this framework. 

The most important cons of these apps are:

  • Lack of SEO optimization. The whole point is in the structure of such applications, which consist of just one page.
  • Longer initial loading time. Since all user-side data of the application must be loaded during initialization, this can cause unpleasant delays for users.
  • The client-side routing challenges. React may not be the best choice for creating applications with complex business logic and data routing.

So, let’s check each of them in more detail.

SEO Challenges

Single-page applications are quite problematic to index because not much text can be recognized by search robots. At the same time, you can’t put all the keywords on one page because it will look weird and lead to spam problems. What's more, the page will have only one URL.

You can eliminate this issue by resorting to server-side rendering. It's a way to render a one-page application on the server side. The app is still one-paged, but the main work is done on the server. The application receives a finished page with the required SEO elements from the server immediately after its initialization. However, due to the complex introduction of this technique, the cost of SPA development might be higher.

Complexity for Large Applications

Managing complex states and data traffic can be a problem in large SPAs. That’s why using React SPAs relates mostly to projects with rather limited functionality. At the same time, if applied skillfully, this library can still be useful when creating large projects – evidence of this is the digital giants that actively use it in the development of their services and applications. 

Initial Load Time

With React’s ability to load all content during initialization, people can wait a lot when opening a SPA first (in comparison to other websites). However, after initial loading, all other data will be pulled up automatically, and there will be no issues with delays in provisioning page content. 

Code splitting solves the problem of slow app loading by reducing the volume of data sent on the first session. Rather than uploading the entire code at once, users do it only with the parts that they need right now. This, in turn, facilitates the coding procedure.

React SPAs vs Traditional Multi-Page Applications (MPAs)

These kinds of apps are paralleled and characterized as competitors. However, multi-page applications (MPAs) are unlikely to lose the race because each alternative works for certain products and commercial pursuits. 

Let's look at the core strengths of each application type:

As you can see, each application type has its drawbacks and advantages. So, when choosing between them, come from the specifics and tasks of your company. 

What kind of companies should pay attention to one-page solutions?

  • Products that run on a captivating platform with low data volumes. SPA is commonly applied to SaaS platforms, social media, and private communities. Some examples include Grammarly, Netflix, and Slack.
  • Startups focused on usability. Single-page apps allow you to create an easy-to-use and intuitive interface that attracts the eye and encourages customers to explore the product. 
  • Startups planning to go big. Later you can reuse some of the code of your single web page application. This helps reduce the time and expense involved in developing new, full-fledged digital solutions.
  • Businesses for whom SEO is not a key metric. If your company doesn't require to be ranked high on Google from its first launch, to successfully implement your idea, SPA is right for you.
  • Companies with their own APIs. You can build a one-page application based on a pre-built API.


Today, we see that one-page applications gradually replace classic applications and begin to play an important role in the construction of large-scale web systems. Now, these apps are everywhere, and we use them every day without noticing it. Moreover, the big players in the app market already use SPAs.

What are the rewards of single-page applications? They are pretty speedy, don't keep visitors on hold, and generally improve their experience when dealing with the solution. in turn, overall consumer comfort has a direct impact on conversion rates and profits.

Still, SPAs are not ideal for all startups. But for those seeking a dynamic, high-speed, and lightweight digital solution, SPAs are an excellent choice.